What Kills Roaches Instantly? | Fastest Way to Get Rid of Roaches in 2023

How many times have you noticed roaches in your house and drummed up ways to kill and eliminate them instantly?

While this does sound easy, it usually isn’t unless you know ways of getting rid of them efficiently.

Now, there are many ways to kill roaches; some are quicker than others, but you should know about all of them.

So, which is the fastest way to kill them?

eliminate roaches instantly

Roach spray is the fastest & most effective way to eradicate these pests; but, to make it work, you need to spray it directly on roaches.

Let’s learn about other quick ways to eliminate them

Solutions to Kill Roaches Instantly

Roach Spray

This is the quickest way to eliminate roaches; there is nothing faster than spraying directly on the cockroach to kill it instantly.

Kills roaches instantly

The urge to just smash a cockroach flat instantly at just the sight of it is uncontrollable.

An urge as such is understandable and to just put an end to their infestation by smacking roaches is impractical much.

A much easier way to eliminate and kill roaches is by using sprays.

Roach sprays are used to target the areas where the cockroaches gather, like the cracks, window frames, skirting boards, and places usually not reachable with bare hands. 

eliminate roaches instantly

Roach spray is an aerosol spray that comes in cans or bottles.

On spraying, the effect starts within seconds and kills the cockroach sprayed on in no more than 5 minutes.

The basic pesticide used in a roach spray is synthetic pyrethroids; this affects the central nervous system of the cockroach and kills it as quickly as possible.

How To Use A Roach Spray

  • First, cover your nose with a face mask or tie a handkerchief around your face before you use the roach spray.
  • Then, locate the target area and place the nozzle of the can pointing at the area where you want to spray.
  • Once the nozzle is pointed towards the affected area of your house, spray it.
  • It is essential to keep children and pets away when using such roaches sprays to eliminate them as they release harmful chemicals.

Cockroach Traps

Cockroach traps are for the people who advocate no poison policies to deal with the pest problem; The pros of roach traps is that they are clean and easy.

There are basically two kinds of traps- the traps you put at night and come back in the morning to find cockroaches inside the automatic machine trap and the sticky trap killer.

Cockroach control by using traps

The sticky trap killer is made of a food-based bait, usually left in places where the clan of cockroaches gathers.

It’s easy to use; all you have to do is leave the sticky trap killer open on the ground and wait till the surface of the trap is filled with roaches.

Roach Fogger

If you are looking for a way to disinfect a larger area like a warehouse or an office, a fogger is your solution.

It is an expensive way but an effective one to get rid of a cockroach infestation quickly.

With the help of roach foggers, you can also get rid of the baby cockroaches.

Roach Fogger works by transforming the poison into dry fog particles less than 15 microns in size thus killing roaches instantly.

The fog, which consists of the roach killer components, can percolate into any openings or crevices where no other product can reach.

It takes up to 6 hours to end an infestation and eliminate roaches from the time of its use.

Dry fogging is usually a professional way to deal with pest problems; if you want to do it yourself, you can buy a thermal fogger machine yourself.

On using a good roach fogger, the poison particles rise in the air and then gradually settle.

While settling, they fall onto small cracks and openings and even on ceilings and walls, killing every adult, larva, or ovipositor.

The effect lasts from 40 to 60 days of its use; it provides the best result, the closest to professional extermination.

eliminate roaches with fogger

How To Use The Fogger

  • It is a toxic pesticide that can cause harm to pets and children and the one using the fogger.
  • Therefore, before using it, make sure to vacate the place for at least 10 hours and cover your nose with an effective face mask; wear glasses for your eyes and gloves for your hands.
  • Cover all the food and drinks at home.
  • Make sure the poison does not come in contact with the skin.
  • Once the necessary precaution is taken, use a generator of high-temperature dry fog. Ordinary sprayers are not equipped to create dry fog.
  • Use a high-quality poison and make sure not to use the same poison every time as cockroaches can adapt and develop tolerance too often.

Cockroach Gel Bait

To keep roaches at bay, humans come up with various seemingly effective solutions.

Gel Bait for Killing Roaches Fast

Not all of them work a cent percent but, we never stop trying.

In the war against roaches, cockroach gel bait is one such hopeful solution. And the effectiveness of this is, however, not up-to-the-mark.

To lure cockroaches into falling for this bait is tricky; the catch here is to entice a cockroach into eating the gel bait.

In most cases, cockroaches exhibit a certain kind of aversion towards it; therefore, infestation continues if they do not consume it.

The bait works very rarely as most of the time, it’s difficult to locate them as they can be scattered all over a place.

eliminate roaches instantly.

How To Use Gel Bait

To use this bait, one needs to follow the following steps:

  • Firstly, you must locate the spots you want to target.
  • Usually, places with feces of any kind or leftover food near trash cans in your kitchen or small cracks and crevices in walls and floors are where these critters are found.
  • Then, once the spots are located, place small dots of the gel bait.
  • The gel bait dries up over time, losing its effect; therefore, keep reapplying it for successfully killing the roaches.

Roach Killers from Home Products

Boric Acid (found in Borax)

Borax kills kills coroaches instantly so, if you want a fairly inexpensive method to getting rid of cockroaches and a lesser harmful way of pest control,  20 Mule Team Borax is your answer.

However, the only drawback of it is that, on getting the faintest whiff of boric acid, the cockroaches, instead of eating it, go as far away from possible.

That does not kill them; in order to die, they must consume the powder. And the best way to achieve this is baking delicious borax baits for roaches. 

boric acid for roaches

How To Use Boric Acid

First, you will need to eliminate the smell of boric acid to lure roaches into eating it; to achieve that, you need to mix boric acid with raw egg yolk.

  • Take 50 mg of Boric acid and mix it well with one raw egg yolk.
  • After blending it well, it will form into a gruel. Roll the gruel into small balls of 1 cm in diameter and leave these balls to dry.
  • Once dried, spread these balls in the targeted territories and let the cockroaches snack on them.

Or you can also leave the powder as it is by sprinkling them all over the desired location like sinks, toilet bowls, places around any water source, and around trash bins.

Once the infestation seems to have uprooted, you can wash off the boric acid with a wet rag.

Baking Soda

Another natural remedy to kill cockroaches is using baking soda and sugar mix for cockroaches to feed on.

The combination plays a ‘trap to kill’ as sugar attracts the cockroaches and the baking soda kills.

Cockroaches do not have any gastrointestinal mechanism to release gas; therefore, eating baking soda and then drinking water after it creates gas, thus causing death.

baking soda for roaches

How To Use Baking Soda

  • You must mix equal parts of sugar to equal amounts of soda and leave it on unusable plates or lids of old containers in places that are not easily reachable, like behind wardrobes, under sinks, under refrigerators.
  • If possible, mix yeast with the mixture and let the roaches get lured to eat it.
  • Once they eat the mixture, they go near water sources and die due to the explosion of its stomach.


Borax is an efficient cockroach killer; it is inexpensive and easy to use.

The arrangement of the killing of cockroaches with borax is not entirely the best-planned killing as it leaves behind a lot of mess.

However, it’s compelling enough; it might not be instant, but the results are certainly positive.


How To Use Borax

You cannot simply leave borax in the open for the roaches to feed and eliminate them.

  • Firstly, locate the most known places of gathering; usually, areas surrounding water sources or places in your house with easy availability of food for roaches.
  • Once you have located it, dust the area with borax.
  • The cockroaches walk over the dusted area, and the borax stick to their feet, and when they clean their feet off, the borax is eaten by them, which causes their death later.
  • Sometimes, on feasting upon the dead cockroaches, the feeding ones die too if there remain traces of borax.


Bleach is an inexpensive repellent; it gives off a strong smell that the roaches hate.

It sure is doubtful to put a complete end to your roach problem, however, you can use it to keep them at bay.

Killing American cockroaches with bleach

Therefore, instead of enticing them to eat, the smell of bleach sends them away.

So, you can also use bleach to get rid of roaches from your house.

How To Use Bleach

  • Use an old bottle and attach a small spraying nozzle.
  • Make a solution of bleach and water and pour it inside the bottle.
  • Shake it well before spraying them on the cockroaches.

However, bleach is a corrosive product therefore it’s not really advisable to use bleach to treat your cockroach problem at home.

Diatomaceous Earth

If you are one of those who is very cautious about ‘what-goes-inside-their-bodies’, then probably diatomaceous earth is the perfect solution to fight and eliminate the roaches.

It is safe around children and pets and is organic; it causes no harm to humans, and the effects stay longer than any chemical treatment.

Diatomaceous earth is in the form of rock powder with abrasive and absorbent properties.

The pest when comes in contact with it dies as a result of dehydration; the exoskeleton is cut by the abrasive powder and water from the pest’s body is absorbed by it thus killing roaches instantly.


How To Use Diatomaceous Earth

  • Clean all the potential areas of infestation in your house.
  • Dry the areas near water sources or wet regions around the house and keep garbage rid; diatomaceous earth does not work on wet areas.
  • Seal away any opening that could be housing cockroaches.
  • Now lightly dust a thin layer of the diatomaceous earth in those places.
  • Make sure you do not make it into a heap as then it would only keep the cockroaches away.
  • Also, secure around the foundation of the house and keep it dry.

Soapy Water

Spraying roaches with soapy water is the classic case of murder by suffocation.

Cockroaches, too, like any other bug, breathes through the microtubes on their bodies.

Spraying roaches with soapy water creates a thin film of soap around them, blocking the microtubes, which eventually suffocates and kills them instantly.

soapy water for roaches

How To Use Soapy Water

  • Take a used bottle with a spraying nozzle.
  • Mix any detergent with water and shake it well.
  • Voila! Your recipe to kill cockroaches at sight is ready.

However, what needs to be understood is that it is only a temporary solution to the roaches problem; it does not eliminate the hundreds of cockroaches hiding in concealed areas of your house.

Other Solutions to Consider

Peppermint Oil

While it doesn’t kill them, peppermint oil repels roaches, and fast.


You must be thinking, predators! But which animals eat cockroaches?

Well, the list of predators is never-ending; as it turns out, a cockroach is like a delicacy for many animals, including mammals, reptiles, amphibians.

Reptiles like lizards are one of the greatest predators of cockroaches; be it house lizards or geckos.

Predators that kill cockroaches

Frogs too like to feast on cockroaches; the list also includes turtles and some birds.

Particular species of spiders eat roaches; even RIFA ants, which are the invasive red imported fire ants, prey on cockroaches.

The Argentine black sugar ants are also predators of cockroaches; other than these, mites, centipedes, and roundworms too feed on cockroaches.

Exterminate Roaches with Licensed Pest Control

While the above-mentioned solutions and products might give you the desired results for some time, it is always recommended to hire a licensed exterminator in the case of a serious and growing roach infestation.

To help you with this, we have curated a personalized Pest Control form that will give you free quotes from multiple exterminators so that you can hire a professional who is worth your money, time, and effort.

And don’t worry, all the personal details that you mention here are 100% safe! Also, by filling the form, at least, you’ll know how much you will have to pay if you take the help of your local exterminators

Final words

No one can deny the various health hazards posed by roaches that can cause many diseases and illnesses.

Therefore it’s important to get rid of these buggers immediately and effectively.

While the above-mentioned alternatives are quite efficient, they might still not work in case of an heavy infestation.

This is where taking the help of a professional exterminator will instantly and permanently solve all your roach-related problems.

I hope this article helps you to eliminate roaches and keep them away from your home for an extended period.

For any more questions regarding roaches and how to deal with them, feel free to reach out to us in the comments below.

We hope you have a roach-free 2021!

1 Comment

  1. Lawrence Graham

    Thanks for exposing the gel bait myth. I’ve used many of them including advion FC Magnum combat to no avail! Boric aci and diamataceous earth should be known, to have any effect at all must be placed all over. Floors countertops cupboards and will make your house look like a baking experiment gone bad and only mild results. Sprays like WP demon with IGRs have no effect as most roaches are immune and avoid it til it dries when it has no effect. I keep looking but to date nothing, I repeat nothing is very effective. Whatever exterminators use homeowners can’t get!

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